Woodworker&#39;s plane.



J. H. BROWN.

WOODWORKBRS PLANE.

APPLICATION FILED Nov.17. 190e.

Patterned. o@t.5,1909.

` gf @2f 10 1,3 ATTORNEYS mnnsw. s. GRAHAM co.. Puom-umocbumsns.wAsmNorox. n c.

JAMES HORACE BROWN, OF BOSTON, MASSACHUSETTS.

' WOODWORKERS PLANE.

Specification of Letters Patent.

Patented oet. 5, 1909.

Application filed November 17, 1908. Serial No. 462,996.

To all 'whom 'it may concern.'

Be it known that I, JAMES HORACE BROWN, a citizen of the United States,and a resident of Mattapan, Boston, in the county of Suffolk and Stateof Massachusetts, have invented a new and Improved Woodworkers Plane, ofwhich the following is a full, clear, and exact description.

The purpose of this invention is to provide novel details ofconstruction for a plane, that facilitates the exact adjustment of thecutter bit laterally and longitudinally in the throat of the planestock, enable the quick and exact graduation for size of the throatopening in said stock, provide novel means for clamping the cutter bitwhen adjusted .in the throat opening.

The invention consists in the novel construction and combination ofparts, as is hereinafter described and defined in the subjoined claims.

Reference is' to be had to the accompanying drawings forming a part ofthis specilication, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a partly sectional side view of the improved plane,substantially on the line 1 1 in Fig. 2; Fig. 2 is a partly sectionalplan View, substantially on the line 2 2 in Fig. 1; Fig. 3 is afragmentary plan view, partly in section on the line 3 3 in Fig. 1; Fig.4 is a sectional side view of details shown in Fig. 1, but showing achanged adjustment thereof and Fig. 5 isa partly sectional view ofparts, taken substantially on the line 5 5 in Fig. l.

The stock for the plane is cast into form from metal, and essentiallyconsists of a flat base plate 10 having vertical walls 10a formed alongits side edges, and said side walls having their greater height neartheir longitudinal centers are curved on their upper edges, as shown forone side wall in Figs. 1 and 4. At a suitable distance from the frontend of the stock 10, a transverse throat opening a is formed in the basepor tion thereof, 'and at the front and rear edges of said throat,oppositely inclined defining walls al, a2 are formed on said baseportion, as is clearly shown in Fig. 1. Rearward of the throat opening aand parallel therewith, a post 11 is erected on the base 10, said postextending from one side wall 10a to the opposite one, as shown in Figs.1 and 3, and being located near the longitudinal center of the planestock.

Novel means is employed for graduating the width of the slot opening a,consisting in the provision of a wedge-shaped tongue piece 12, seatedupon the inclined rear defining wall a2 of the slot a, said tongue pieceextending across the Stock into loose'engagement with the inner surfacesof the side walls 10a. The tongue piece 12 is provided with a rearwardextension 12a in the form of a flat plate, having at its end a fork 12projecting from its lower face and adjacent to said fork a cross slot o.The post 11 is thickened near its junction with the base 10, and in saidthickened portion a threaded perforation is formed, in which thethreaded body of an adjusting screw-13 is screwed, said screw having aroughened head 13a formed or secured von the rear end thereof. The screw13 extends between the members of the fork 12b and is provided at itsend with a collar 13b which projects into the slot b, so that bymanipulating the screw the tongue piece 12 can be adjusted to increaseor decrease the width of the slot a. The connection between the tongueand screw, permits the tongue to be readily detached from the screw andremoved when desired.

The cutter bit la of the plane, is in the form of a Hat metal plate,preferably formed of steel and having one end beveled to produce atransverse cutting edge o thereon. At the transverse center, alongitudinal slot (l is formed in the cutter bit 14; extending of asuitable length between the ends thereof. The cutter bit 14 is seatedupon the tongue piece 12 and the upper end of the post 11, Said endbeing sloped forward and downward, as shown in Fig. 1, to adapt it for aproper support of the bit. The bit 14 is held seated upon the tonguepiece 12 and post l1 by a novel clamping device that also serves thepurpose of a cap plate for the cutter bit, said device comprising thefollowing details: A resilient thin metal plate 15 having a properlength, and a width that is equal with that of the cutter bit, issecured by one end that is uppermost in service upon a spacing block 16whereon a resilient hook plate 17 is also secured. The Spacing block 16is a flat rectangularlyedged slab of metal from the rear end of whichprojects a flange 16a at a right angle, said block having parallelsides. The hook plate 117 is ofl an equal widthy with the' resilient capplate 15, and these plates at their upper ends are oppositely lappedupon the upper and lower surfaces of the spacing block 16, whereon theyare secured byy a rivet or screw, as shown at e. Upon thelower. orforward` end' of the plate 17, a transverse hook g is formed, that isadaptedV for a hooked engagement with a keeper bar 18 that extendsacross the stock of the plane above and in contact with the cap plate15, and is secured by its ends inl the side walls 10a' of'said stock. Itwilll be seen that the hooked' engagement of the plate 17 with thekeeper bar 1S, will hold the cap plate 15 imposed upon the cutterl bit14; and tol e nforce saidl engagement set screws it are 1nserted in thecap plate and spacingblock 16, that willI graduate the pressure of thevcap platein accord withY the degree of projection given the setV screws,that bear on said cutter bit near each side edge thereof, as shown inFigs 1, 2'and 1. l

In' the post 11, near its upper' edge, a screw 1'9 is secured by one endthereof, and thence extends rearward and upward. Upon the threaded bodyof the screw 19, a sleeve nut l is loosely mounted, said nut having'l aradialv flange il formed thereon, andE upon a' portion of thecylindrical body of said nut, a thread is cut. Upon the threaded bodyofthe nut 1, a nut 2 having aA body similar to the flangeisf adjustablymounted and adapted for rotatable movement toward' or from the flange i.Near the upper end ofthe cutterbit 14E, a transverse slot Z1 is formedthat crosses-the longitudinallslot d. Below the slot CZ, the adjustingscrew 191is positioned and insuch close relation' to'the cutter bit 14'that the radial Hange' and the nut 2 willV project into thetransverseslot di and by lateral adjustment may be caused tohave lateralcontact with the side edges of said slot.

It willl be seen that by a screwed adjustment of; the-nuts z', 2, on thebody of the adj'usting screw 19,- there may be an exact longitudinaladjustment given tothe cutter bit 14 for its projection or retractionin' the t'ransverse'throat slot a; further, by screwing the flanged1 andnut 2 into an engagement withy the defining sides of the cross slot (Z1,theVv cutter' bit l'fl will be firmly held at' a desired point oflongitudinal' adjustment thereof-L Upon the adjusting screw- 19, nearthe post 115, a lever 20 is mounted. and secured near one endthereof,atoe m extending from= the upper end of? saidf lever through the slot(Z, havinga loose engagement with the defining side edgesthereof, themain-portion ofi said lever projecting'dow-n near to the base 10, anditi will' be noted that a sidemovement o'ffthe lever will slightly'rockthe cutterv bit 111 acc'ordingly'and thus depress a respective corner ofthe cutting edge of the bit, enabling an exact adjustment of said edgeto i adapt it tohave a true bearing on the material over which the planeis moved in plani ing it,I

At the front end, a knob 21 is secured that =projects vertically fromthe plane stock,

this being a common provision to enable hand pressure to be applied uponthe front end of the plane. j

The handle 22' ofthe plane', is provided with a forwardly-projecting`flange n at the lower end thereof, said flange having a notch 0 in the`front edge, which receives a stud- 01 formed on the rear portion of thebase of the stock at its transverse center. The body of the handle 22,is preferably given skeleton form, that affords a flat bottom walll nl'thereon, which is centrally perforated andi registers with a threadedperforation formed at thetransverse center of the base' portionv 10; andit will be'seen that if the stud 01 is placed in the notch 0k and' ascrew p is inserted through the perforation in the handle down into thethreaded perforation in the base 10; the handle 22 will be firmly butdetachably secured; upon the plane stock.

It will be apparent from the foregoing description, thatv the cutter bit14 may be given different degrees of inclination on the stock by anadjustment of the tongue piece 12 toward or from the throat slot a; thecap plate'l-maylbe adjusted for graduating its pressure onthe cutter bitand isnot connected therewith other than by frictional contact. Theprovision` of the adjusting screw 19 and fianged nuts/ and' thereon thatare adjustable in the cross slot (Z1, greatly facilitates the exact:adjustment of the bit lflsoas-to cuta-thick or thin shaving from thematerial operated upon, and this in conjunction with the'lever 20"enables a close accurate adjustment to be givenl to the edge of thecutter bit.

Having thus described my invention, I claim as new and desire tosecureby Letters Patent:

1'. Tn a plane, the combination withl a stock having' abase portion andiside walls thereon, said'base having' a transverse throat openingtherein, a post erected on the' base a distance rearward from thethroat' open; ing, and a cutter bit seated'upon the tongue piece andupon the post, of a clamping device comprising a resilient cap plate,ahook plate, al spacing block` whereon the end por-- tions offthecap'plate and hookf plate are secured, a' hook formed transverselyon'the free end of' the hook plate, a keeper bar secured at its ends inthe sidewalls of the stock andfwhereon the hook! plate is hooked, and?means forenforcin'g spring pressure of the clamping device'upon-thecutter' bit.

2. Ina plane of! the character described,

the clamping device for the cutter bit, comprising the resilient capplate, the hook plate having a hook on one end thereof, the spacingblock secured between the adjacent ends of the cap plate and hook plate,and adjusting screws carried by the spacing block.

3, In a plane, the combination with a stock having a transverse member,and a eutter bit, of a resilient ,cap plate engaging the bit, a membercarried by the cap plate and engaging the transverse member of thestoelc, and means for increasing the pressure of the cap plate upon thebit.

4L. In a plane, the combination with a stoel: having a transverse memberabove the base thereof, and a cutter bit, of a resilient cap plateengaging the bit, a member secured at its upper end to the cap plate andi having a hook at its lower end engaging the transverse member of thestock, and screws arranged between the cap plate and bit for increasingthe pressure of said cap plate.

5. In a plane, the combination with a stock having side walls andprovided with a bar extending between the side walls of the stock, and acutter bit, of an angular block, two resilient plates secured uponopposite sides of one member of the said block, one plate resting uponthe cutter bit and the other provided with a hook at its free endengaging the said bar, and screws projecting from the inner face of thesaid block and engaging the cutter bit.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing' witnesses.

JAMES HORACE BROWN.

IVitnesses MICHAEL F. HART, F. HOWARD HALLETT.

